Heating apparatus



FIG. 1 is a perspective view of a heating apparatus, showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a side view thereof, taken from the left of FIG. 2;

FIG. 5 is a side view thereof, taken from the right of FIG. 2; and,

FIG. 6 is a top plan thereof. 

CLAIM We claim, the ornamental design for a heating apparatus, as shown and described. 